Patent · US Expired

Apparatus and method for synchronized formation measurement

US6439046B1 · kind B1 · utility

17Cited by

17References

23Claims

0Family size

Assignee

Baker Hughes Holdings LLC · US

Inventors

Thomas Kruspe · Braunschweig, DE
Hartmut Schrader · Bad Doberan, DE

Key dates

Filing date	Aug 15, 2000
Grant date	Aug 27, 2002
Priority date	—
Expiry date	Aug 15, 2020

Classification

Technology area (CPC G)Physics
CPC primaryG01V3/32
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The present invention provides an apparatus and method for minimizing movement of a drill string during MWD with vibration-sensitive instruments comprising conveying a drill string into a borehole with a sensor mounted on the drill string for sensing a parameter of interest of a formation. A clocked controller is disposed on the drill string for controlling timing of the sensor; and a second clocked controller is disposed at a surface location. During drilling operations, the clocked controllers are synchronized such that the surface controller is performing certain tasks in timed sequence with the sensor even though the surface controller is not connected to the sensor.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.